Life cycle for Right-time Data Wareshouse:

Ideally everybody should start with a traditional Data Warehouse. This stores data of historic value. The delay between source data base and Data Wareshouse depends on the refresh freequency. This delay can be reduced by having Data Warehouse refreshed more freequencty. Freequency of refresh should be decided by the business requirement. Eventually one arrives at Right-time Data Warehouse.

There are tools available in the market that help in building a Right-time Data Warehouse. Infosphere from IBM will help in a building a Right-time Data Warhouse.